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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#107015#5301. Modulo Ruins the LegendSmallBlackWA 9ms3680kbC++141.5kb2023-05-20 08:06:122023-05-20 08:06:21

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-05-20 08:06:21]
  • 评测
  • 测评结果:WA
  • 用时:9ms
  • 内存:3680kb
  • [2023-05-20 08:06:12]
  • 提交

answer

// Problem: A - Modulo Ruins the Legend
// Contest: Virtual Judge - 过什么520做题要紧
// URL: https://vjudge.net/contest/559671#problem/A
// Memory Limit: 1024 MB
// Time Limit: 1000 ms
// Date:2023-05-20 07:53:13
// By:SmallBlack
// 
// Powered by CP Editor (https://cpeditor.org)

#include<bits/stdc++.h>
using namespace std;
inline long long read()
{
	long long s=0,k=1;
	char c=getchar();
	while(!isdigit(c))
	{
		k=(c=='-')?-1:1;
		c=getchar();
	}
	while(isdigit(c))
	{
		s=s*10+c-'0';
		c=getchar();
	}
	return s*k;
}
#define d read()
#define ll long long
#define Maxn 10010
#define Size 10010
#define mp make_pair
#define pb push_back
#define fi first
#define se second
ll exgcd(ll a,ll b,ll &x,ll &y)
{
	if(b==0)
	{
		x=1,y=0;
		return a;
	}
	ll e=exgcd(b,a%b,x,y);
	ll z=x;
	x=y;
	y=z-y*(a/b);
	return e;
}
pair<ll,ll> sogcd(ll a,ll b,ll c)
{
	if(c==0) return mp(0,0);
	ll e,op,x,y;
	if(a<0) c=-c,a=-a;
	e=exgcd(a,b,x,y);
	if(c%e!=0) return mp(0,0);
	ll k=c/e,ka=a/e,kb=b/e;
	ll nx=k*x,ny=k*y;
	ll qwq;
	if(nx<0) qwq=(kb-nx)/kb;
	else qwq=(1-nx)/kb;
	nx+=qwq*kb,ny-=qwq*ka;
	return mp(nx,ny);
}
int main()
{
	ll n=d,m=d;
	ll sum=0;
	for(int i=0;i<n;i++) (sum+=d)%=m;
	ll a=n*(n+1)/2,b=n;
	a%=m,b%=m;
	for(int i=0;i<m;i++)
	{
		auto x=sogcd(a,b,(i+m-sum)%m);
		if((x.fi*a%m+x.se*b%m+m)%m==(i+m-sum)%m)
		{
			printf("%lld\n",i);
			x.fi=(x.fi%m+m)%m;
			x.se=(x.se%m+m)%m;
			printf("%lld %lld\n",x.se,x.fi);
			return 0;
		}
	}
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 3508kb

input:

6 24
1 1 4 5 1 4

output:

1
22 1

result:

ok ok

Test #2:

score: 0
Accepted
time: 0ms
memory: 3468kb

input:

7 29
1 9 1 9 8 1 0

output:

0
0 0

result:

ok ok

Test #3:

score: 0
Accepted
time: 2ms
memory: 3512kb

input:

1 1
0

output:

0
0 0

result:

ok ok

Test #4:

score: 0
Accepted
time: 0ms
memory: 3408kb

input:

1 1000000000
963837005

output:

0
36162994 1

result:

ok ok

Test #5:

score: 0
Accepted
time: 2ms
memory: 3532kb

input:

2 1
0 0

output:

0
0 0

result:

ok ok

Test #6:

score: 0
Accepted
time: 2ms
memory: 3680kb

input:

2 1000000000
948507269 461613424

output:

0
294939652 1

result:

ok ok

Test #7:

score: 0
Accepted
time: 4ms
memory: 3544kb

input:

100000 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

output:

0
0 0

result:

ok ok

Test #8:

score: 0
Accepted
time: 9ms
memory: 3676kb

input:

100000 1000000000
253614966 278270960 980235895 498158918 928430170 216003119 852570558 948400590 239257296 897053667 294741176 38297441 382677590 406314557 609468973 854148232 314532767 738191551 158215002 5865825 920471826 380037058 356271728 749175327 28319049 208101105 953758995 896570758 521930...

output:

46613
4640 1

result:

ok ok

Test #9:

score: -100
Wrong Answer
time: 5ms
memory: 3460kb

input:

100000 998244353
561002596 498658036 721339539 63377827 532179242 934651519 234198881 490149304 2056307 499913682 427679408 694677560 516580968 300129454 816286800 688594301 183049581 456627420 495848352 273497462 953217060 796225499 207179832 728054671 409492082 25003432 810431468 206421553 5569626...

output:

4
997999009 2800

result:

wrong answer Participant answer greater than judge